src/main.cpp

/**
 * main.cpp is part of bmsapp.
 *
 * bmsapp is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * bmsapp is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
#include <QApplication>
#include <QCommandLineParser>
#include <QDebug>
#include <QDate>
#include <QMessageBox>
#include <QSettings>

#include "MainWindow.h"
#include "config.h"

void myMessageOutput(QtMsgType type, const QMessageLogContext &context, const QString &msg)
{
    static QMutex mutex;
    QMutexLocker lock(&mutex);

    static QFile logFile("bmsapp.log");
    static bool logFileIsOpen = logFile.open(QIODevice::Append | QIODevice::Text);

    fprintf(stderr, "%s\n", qPrintable(qFormatLogMessage(type, context, msg)));

    if ((type != QtDebugMsg) && logFileIsOpen) {
	QDateTime dateTime(QDateTime::currentDateTime());
        QString timeStr(dateTime.toString("dd-MM-yyyy HH:mm:ss:zzz"));
	logFile.write(timeStr.toUtf8());
	switch (type) {
	    case QtInfoMsg:	logFile.write(" INFO "); break;
    	    case QtDebugMsg:	logFile.write(" DEBUG "); break;
	    case QtWarningMsg:	logFile.write(" WARN "); break;
	    case QtCriticalMsg:	logFile.write(" CRIT "); break;
	    case QtFatalMsg:	logFile.write(" FATAL "); break;
	}
        logFile.write(qFormatLogMessage(type, context, msg).toUtf8() + '\n');
        logFile.flush();
    }
}


int main(int argc, char *argv[])
{
    QApplication app(argc, argv);
    QString locale = QLocale::system().name();

    qInstallMessageHandler(myMessageOutput);
    app.setApplicationName("bmsapp");
    app.setApplicationVersion(VERSIONSTRING);
    app.setOrganizationName("mbse");

    /* Stylesheet setup */
    QFile f(":/qdarkstyle/theme/style.qss");
    //QFile f(":dummy");
    if (!f.exists())   {
	printf("Unable to set stylesheet, file not found\n");
    } else {
	f.open(QFile::ReadOnly | QFile::Text);
	QTextStream ts(&f);
	qApp->setStyleSheet(ts.readAll());
    }

    /* Setup user ini format */
    QSettings::setDefaultFormat(QSettings::IniFormat);

    /* Setup commandline parser */
    QCommandLineParser parser;
    parser.setApplicationDescription("Brewery Management System Application.");
    QCommandLineOption const startConfigOption({"c", "config"}, "Start the configuration editor.");
    parser.addOption(startConfigOption);
    QCommandLineOption const useDevelopOption({"d", "develop"}, "Use the development database.");
    parser.addOption(useDevelopOption);
    parser.addHelpOption();
    parser.addVersionOption();
    parser.process(app);

    QString langFile = QString("bmsapp_") + locale;
    QStringList searchDirs = QStringList() << qApp->applicationDirPath() << qApp->applicationDirPath() + "/../share/bmsapp/translations";
    QTranslator translator;

    for (int i = 0; i < searchDirs.size(); i++) {
	if (translator.load(langFile, searchDirs[i])) {
	    app.installTranslator(&translator);
	    qDebug() << "lang from" << searchDirs[i];
	    break;
	}
    }

    qInfo().noquote() << "Starting" << app.applicationName() << app.applicationVersion();

    MainWindow w(parser.isSet(useDevelopOption), parser.isSet(startConfigOption));
    w.show();

    try {
	auto mainAppReturnValue = app.exec();
	qInfo().noquote() << "Finished" << app.applicationName() << app.applicationVersion();
	qInfo() << "";
	return mainAppReturnValue;
    }
    catch (const QString &error) {
	QMessageBox::critical(0,
            QApplication::tr("Application terminates"),
            QApplication::tr("The application encountered a fatal error.\nError message:\n%1").arg(error));
    }
    return EXIT_FAILURE;
}